Calculating machine



Mar. 3, 1925.

S. A. SCHELLINO CALCULATING MACHINE Original Filed Feb. 24, 1920 2SheetsfSheet l @uw w.. f a

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Mar. 3, 1925.

S. A. SCHELLNO CALCULATING MACHINE 2 Sheets-Sheet 2 originl Filed Feb.24, 1920 INVENTOI; s. f7. SC/ff4L //\/O In' /M WITNESS:

vPatented Mar. 3, 1925.

SPIRIT A. SCHELLINO, OF SANA FRANCISCO, CALIFORNIA.

CALCULATING MACHINE.

Application led February 24, 1920, Serial No. 360,580. Renewed December23, 1924.

To all whom it may concern:

Be it known that I, SPIRIT A. SCHELLINO, a subject of Italy, and aresident of the city and county of San Francisco, State of California,have invented a certain new and useful Calculating Machine, of which thefollowing is a specification.

The invention relates to calculating machines of a type embodyingtoothed adjusting wheels, having laterally movable teeth, variable as tothe number moved laterally and provided with key actuated means forlaterally moving the desired number of teeth into operative position.The rotation of the wheels is preferably effected by a handle whichprojects to the outside of the machine and the values adjusted on thetoothed adjusting wheels are transmitted on the rotation of the crankhandle, indirectly, by means of intermediate wheels, to the figure discsof the counting mechanism, which, for

the purpose of making the direct'action of the units toothed adjustingwheel on the intermediate wheel of the figure discs of higher valuepossible, is preferably disposed in parallel displaceable relation tothe adjusting mechanism axis. The counting mechanism or wheelsindicating the crank revolutions, is located on the carriage of thedisplaceable main registering mechanism. The main registering mechanism,or series of figure discs, is provided with a suitable zero settingmechanism and the revolution indicating mechanism is similarly providedwith suitable zero setting mechanism. The present invention relatesparticularly to the toothed adjusting wheels and the means forlaterallymoving teeth on said wheels, variable as to number, into the path of theintermediate wheels of the counting mechanism. The mounting of thecounting mechanism on a displaceable carriage is a well known expedientand will not be set fort-h herein, it being understood that any suitableor well known counting mechanism may be employed and may be arranged infixed or displaceable relation, as desired.

An object of the invention is to provide key actuated means for movingthe teeth of the adjusting wheel in variable numbers into the path ofthe registering mechanism operative means.

The invention possesses other advantageous features, some of which, withthe foregoing, will be set forth at length in the following description,where I shall outline in full, that form of the invention, which I haveselected for illustration in the drawings accompanying and forming partof the present specification. In said drawings I have shown one specificembodiment of my invention, but it is to be understood that I donotlimit myself to such form, since the invention, as expressed in theclaims, may be embodied in a plurality of forms.

Referring to said drawings:

Figure 1 is a top or plan view of one form of calculating machineembodying my invention.

Figure 2 is aside elevation of one bank of keys and the mechanismactuated thereby.

Figure 3 is a vertical section taken on the line 3-3, Figure 5.

Figure it isa vertical section taken on the line L1 4, Figure 5.

Figure 5'is an elevation of a toothed adjusting wheel' and co-operativemechanism.

The present invention relates to the toothed adjustingwheel and itsco-operating and actuating mechanism and the specifica.- tion will belimited to such combination of devices, it being understood that theydevices are `capable of employment in calculating machines embodyingother suitable or well known devices for producing a completecalculating machine. The tooth adjusting mechanism of my inventioncomprises a unit, a plurality of which are assembled in-a completemachine. In Figure l I have shown a machine embodying five units but itis to be understood that any desired number of units may be assembledtogether. The registering mechanism is shown stationary, for the purposeof illustration, but may be mounted on a laterally displaceablecarriage, as is well vknown in the art.

Each unit mechanism comprises a wheel 2 secured to a shaft 3 which isrotatable by a handle 4 or other suitablelmeans. Formed on or secured toone side of the wheel is a cage 5, having a peripheral slot 6 throughwhich the tooth bars 7, 8, 9 and 12 extend. The tooth bars are pivotedto the cage 5 adjacent the center of the wheel, on a curved bar 13 lyingin a plane parallel to the plane of the wheel, so that the tooth barsare movable laterally or in planes normal to the plane of the wheel. Theslot 6 is wider than the tooth bars at that portion of the tooth barswhich extends through the slot, so that the bars have a limited angularmovement about the pivot bar.A The tooth bars are normally pressed awayfrom the wheel and against the outer edge of the slot 6, by springs 14disposed between the bars and the face of the wheel. The tooth bar 7 isprovided with one tooth l5, the tooth bar 8 with one tooth 16, the.tooth bar 9 with three teeth 17 and the tooth bar 12 with four teeth 18.The teeth extend beyond the periphery of the wheel and normally lie in aplane displaced laterally from the plane of the intermediate toothedwheel 19 which is connected to the registering disc 21. Means areprovided for moving the teeth laterally in variablel numbers into theplane of the intermediate wheel 19, so thatas the shaft 3 is rotated,the intermediate wheel will be moved through an angle corresponding tothe number of laterally displaced teeth. The tooth bar 7 is provided onits face remote from the wheel with a projection 22, the tooth barv8 isprovided with a projection 23, the tooth bar 9 with a projection 24 andthe tooth bar 12 with a projection 25, the

projections being disposed at diferent distances radially from thecenter of the wheel.

i Arranged adjacent the wheel are a plu rality of radially movable'slides 26-27, which preferably overhang the shaft 3 and which arepreferably held in place between a collar 28 on the shaft and the nextadjacent wheel 2. The slide 26 is provided on its upper end with a.curved cam 29 which is movable with the slide into position to beengaged by either or bothor. neither of the projections 22 and 23 on thetooth bars 7 and 8 and the slide 27 is provided on its upper end with acurved cam 31 which is movable with the slide into position to beengaged by either or both or neither of the projections 24 and 25 on thetooth bars 9 and 12. The plane of the face ofthe cams extends past thelane of the faces of the projections, so t at when a cam anda projectionare equally displaced radially from the center of the wheel, rotation ofthe wheel will bring the projection into contact with the cam and causea lateral movement of the tooth bar. The slides extend below theperiphery of the wheel and means are provided for setting the slides inthe desired positions to produce the desired lateral displacement of thedesired number of teeth. Normally the cams are radially displaceddi'erent distances than the projections, so that rotation of the wheelwill cause no lateral displacement of the teeth.

`When it is desired to displace one tooth,

the cam 29 is positioned so that it will be -engaged by projection 22only; when it is desired to displace two teeth, the cam 29 is positionedso that it will be engaged by projections 22 and 23; when it is desiredto displace three teeth, the cam 31 is positioned so that it will beengaged by projection 24 only; when it is desired to displace four teeththe cam 31 is positioned so that it will be engaged byprojection 25only; when it is desired 'to displace live teeth cams 29 and 31 arepositioned to be engaged by projections 22 and 25; when it is desired todisplace six teeth, cams 29 and 31 are positioned to be engaged byprojections 22, 23 and 25;-when it is desired to displace seven teethcam 31 is lpositioned to be engaged by projections 24 and 25 and so on.It is understood that the projections engage the cams and move the teethlaterally prior 'tothe time that the teeth pass into the field of theintermediate wheel 19 and that the teeth are held laterally displaced bythe cams as they pass the field of the intermediate wheel,

so that the desired registration is effected.

Key operated means are provided for setting the cams 29 and 31 .in theproper positions for effecting the desired registration. rlhe slides 26and 27 are guided vertically by the shaft 3 and the rod 33 and theslides are provided with pins 34 and 35 which are engaged by thebifurcated ends of the bell crank levers 36 and 37 pivoted on the frame`38. The other ends of the levers 36 and 37 are bifurcated forengagement with pins 39 projecting from the longitudinally movableslides 41 and 42 arrangedv in the frame 3S and held in backward positionby the springs 40. Variable longitudinal positioning of the slides 41and 42 produce variable vertical positioning of the slides 26 and 27thereby eftecting the lateral displace? ent of variable numbers ofteeth. The slides 41 and 42 are moved Vto and held in variable adjustedpositions by the depressible' number keys 51, 52, 53, 54, 55, 56, 57.58, and 59 mounted in the frame. Each key is held normallyvv in`elevated position by a spring 61 secured to the frame plate 62 and io apiu 63 on the key shank 64, which pin acts to limit the downwardmovement ot the key. Each key shank is shaped ditfcrently` correspondingto the number carried by the key` so that the depression of .fl-key setsthe slide or slides 26 and 27 to move the corresponding number of teethlaterally. The slides 41 and 42 are proJ vided with pins 65-66 lyingadjacent the forward faces of the Shanks 64 and these shanks areprovided with inclined faces 67 over which the pins ride as the key isdepressed. Above the inclined faces` the Shanks are of different widthsso that the upper slide 41 isheld in different adjusted positions by deression ofthe different keys. --for setting said cams in predeterminedpo- The pins on t e lower slide are variably placed with relation to thefront faces of the shanks so that the lower slide ft2 is variably movedby the depression of dilerent keys. The key is held depressed byengagement ot' the pin 65 on the tooth formed. by the inclined face 67.Suitable means may be employed for clearing all of the keys.

Depression of key 54 causes a forward movement ot' the upper slide 4l.which sets the cam 31 to move tooth bar l2 laterall Depression of key55 moves the upper sli e 41 the same distance and also moves the lowerslide 42 Which causes both cams 29 and 3l to be set to move tooth bars 7and l2. Key 56 moves the upper slide the same distance and the lowerslide a greater distance on account. of the position of the cooperatingpin 6G, so that the cams are set to move six teeth laterally. Key 57moves the cam 31 to such position that it engages both projections 24and 25 and so on. The upper slide 41 is connected to slide 27 and thelower slide 42 is connected to slide 26. Depression ot a key causes themechanism to be set to cause a lateral movement of the number of teethmarked on the key, and rotation of the tooth wheel causes a registrationof such number.

I claim: 1. In a calculating machine, a Wheel7 teeth pivoted to saidwheel and projecting` radially therefrom and movable in planes normal tothe plane of said Wheel; lateral projections on said teeth at differentdistances from the center of said Wheel; cams adapted to co-operate withsaid projections to produce movement of predetermined teeth and maintainsaid teeth in themoved position, upon rotation of said Wheel and meanssition.

2. In a calculating. machine, a Wheel, teeth pivoted to said Wheel andmovable in planes normal to the plane of said'wheel, projections on saidteeth at different dislances from theV center of said Wheel, slidesarranged adjacent said Wheel, cams on said slides adapted to co-operateWith said projections and keys for moving said slides.

3. In a calculating machine, a Wheel, teeth pivoted to said wheel andmovable in planes normal to the plane of said Wheel. projections on saidteeth at diiferent dislances from the center of said wheel, slidesarranged adjacent said Wheel, cams on said slides adapted to co-operatewith said projections to move said teeth laterally as the Wheel isrotated, keys for moving said slides to position to cause the lateralmovement ot predetermined teeth and registerinr mech-l anism arranged tobe engaged by said laterally displaced teeth.

4. In a. calculatingmachine, a 'Wheeh teeth pivoted to said Wheel andmovable in planes normal to the plane of said wheel, projections on saidteeth at ditl'erent distances from the center of said Wheel, slidesarranged adjacent said Wheel, cams on said slides adapted to co-operatewith said projections, levers connected to said slides. slide barsconnected to said levers and a plurality of keys associated with saidslide bars.

In testimony whereof, I have hereunto set my hand at San Francisco.California, this 16th day of February 1920.

srnur A. soHELLiNo. In presence of H. G. PRosT.

